Malicious PDF — malware analysis report

Static analysis result for SHA-256 49d0fdf494b6423a…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 02:20:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 78ae692b36aa7fd91b8a36fdf5e10f28 SHA-1: 0a7b355651c745ce98ec516ce1a46eff9c63a9c9 SHA-256: 49d0fdf494b6423a9c1a52e98e402bdd1e28973317d5cbb02bed2390e2438485
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'game hacks' or 'currency generators' for popular games. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, which likely leads to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/google-roblox-games-game-hack In PDF document text
    • http://lookpaineis.com.br/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/robux-sign_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://lookpaineis.com.br/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://lookpaineis.com.br/images/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47AB 24728 bytes
SHA-256: 64bab9f3d4638a83026332db9946ef325e3ecee3877892f755ff12f46a24bfed
font_01_sfnt_off0000803b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803B 18560 bytes
SHA-256: 0fb1d19a9ce31739a953e5696a177f7c2cbb3bd8fcc5147d812294bb20adc511

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